China PTFE-Lined Flexible Hose Factories, Service

Brand: Ruitu Automation

Product origin: China

Type: Belongs to industrial pipeline accessories, a flexible pipeline component lined with polytetrafluoroethylene (PTFE).

Application: Can be used for pipeline connections in industries such as chemical engineering, petroleum, pharmaceuticals and others. It is used to convey corrosive media including strong acids, strong alkalis and organic solvents, and can also be applied in fluid transportation scenarios requiring high temperature resistance and high pressure resistance.

Advantages: The internal polytetrafluoroethylene (PTFE) lining provides excellent corrosion resistance and can withstand the erosion of most chemical substances. It is flexible and bendable, enabling more flexible installation and layout. It features a wide operating temperature range and can work stably in environments from -200°C to 260°C. The smooth inner wall creates low resistance during fluid delivery.

Product Description

Core Overview
PTFE-lined flexible hoses are high-performance fluid transfer solutions designed for applications requiring both corrosion resistance and flexibility. Featuring a seamless inner tube made of virgin Polytetrafluoroethylene (PTFE) and reinforced with high-tensile stainless steel wire braid, these hoses excel in handling aggressive chemicals, high temperatures, and dynamic movements. They are widely used in chemical processing, pharmaceutical manufacturing, food and beverage industries, and semiconductor fabrication where purity and durability are paramount. The unique construction allows the hose to absorb vibration, misalignment, and thermal expansion while maintaining a leak-proof barrier against corrosive media.
Basic Specifications
Item Details
Product Name PTFE (Polytetrafluoroethylene) Lined Flexible Hose
Executive Standards HG/T 21562, ASME B16.5, GB/T 12224, SAE J517
Nominal Diameter DN15 – DN200 (1/2" – 8")
Pressure Rating PN10, PN16, PN25 / Class 150, Class 300
Structure Type Smooth bore straight hose, Convoluted flexible hose, Stainless steel braided reinforced hose
Reinforcement Material 304/316L Stainless Steel Braided Layer, Carbon Steel Flange & Fitting
Lining Material Polytetrafluoroethylene (PTFE), PFA optional for high-temperature service
Lining Thickness 1.5–5.0 mm (Standard: 2.0–3.0 mm)
Connection Type Flanged Connection (RF Raised Face), NPT/BSPT Threaded Connection, Quick Disconnect Coupling (optional)
Standard Length 1000mm / 2000mm / 3000mm / 5000mm (Custom length available)
Operating Temperature -20℃ to +180℃ (-4°F to +356°F)
Core Performance Excellent corrosion resistance, low friction coefficient, anti-aging, absorb pipeline vibration & displacement
Applicable Medium Strong acids, strong alkalis, strong oxits, organic solvents and other highly corrosive media
Factory Inspection Hydrostatic pressure test, Spark pinhole leakage test (5kV), Air tightness test, Pressure cycle fatigue test
Main Applications Chemical industry, petrochemical, pharmaceutical, metallurgy, environmental protection, fluorine chemical, sewage treatment industries
Typical Dimensions Table
Nominal Diameter DN Nominal Bore (NB) Hose Inner Diameter (mm) Hose Outer Diameter (mm) Working Pressure (MPa) Burst Pressure (MPa) Minimum Bending Radius (mm) Standard Length (mm) Flange Outer Diameter (mm) Bolt Circle Diameter (mm) Lining Thickness (mm)
15 1/2" 15 24 1.6 6.4 120 1000/2000/3000 90 60 2.0
20 3/4" 20 30 1.6 6.4 150 1000/2000/3000 100 70 2.0
25 1" 25 38 1.6 6.4 180 1000/2000/3000 115 80 2.5
32 1 1/4" 32 48 1.6 6.4 220 1000/2000/3000 140 100 2.5
40 1 1/2" 40 58 1.6 6.4 260 1000/2000/3000 150 110 2.5
50 2" 50 70 1.6 6.4 300 1000/2000/3000 165 125 3.0
65 2 1/2" 65 86 1.0 4.0 380 1000/2000/3000 185 145 3.0
80 3" 80 102 1.0 4.0 450 1000/2000/3000 200 160 3.0
100 4" 100 120 1.0 4.0 550 1000/2000/3000 220 180 3.5
125 5" 125 148 0.6 2.4 700 1000/2000/3000 250 210 3.5
150 6" 150 180 0.6 2.4 850 1000/2000/3000 285 240 4.0
200 8" 200 240 0.4 1.6 1100 1000/2000/3000 340 295 5.0
Core Advantages
Universal Chemical Resistance
Inert to nearly all industrial chemicals, acids, alkalis, and solvents, ensuring zero contamination and long service life.
Extreme Temperature Tolerance
Maintains flexibility and integrity from cryogenic temperatures (-70°C) up to high heat (+260°C), suitable for steam and hot oil lines.
High Flexibility & Vibration Damping
Effectively absorbs pipeline vibration, thermal expansion, and mechanical misalignment, reducing stress on connected equipment.
Non-Stick & Low Friction
The smooth PTFE bore prevents material buildup, scaling, and clogging, ensuring consistent flow rates and easy cleaning (CIP/SIP compatible).
High Purity & Cleanliness
Made from virgin PTFE, meeting FDA, USP Class VI, and 3A sanitary standards, ideal for sensitive pharmaceutical and food processes.
Durability Under Pressure
Stainless steel braiding provides robust burst pressure resistance and protects the PTFE core from external mechanical damage.
Frequently Asked Questions
What media can PTFE-lined flexible hoses handle?
PTFE-lined hoses are chemically inert to nearly all industrial fluids, including strong acids (hydrochloric, sulfuric, nitric), aggressive alkalis, organic solvents, and high-purity pharmaceutical media.
What is the difference between smooth bore and convoluted PTFE hoses?
Smooth bore hoses offer optimal flow rates, minimal pressure drops, and easier cleaning (ideal for high-purity processes), whereas convoluted hoses offer significantly higher flexibility and smaller bend radii for tight routing.
How do I choose the correct end connection for the hose?
End connections depend on your piping infrastructure and process requirements. Common options include ASME/DIN flanged connections (RF), threaded joints (NPT/BSPT), and sanitary quick-disconnect clamps.
Can these hoses handle continuous dynamic movement and vibration?
Yes, the combination of virgin PTFE and outer stainless steel braiding is engineered specifically to absorb pipeline vibration, thermal expansion, and mechanical misalignment from pumps and process equipment.
What quality tests are conducted before dispatch?
Standard quality verification includes 100% hydrostatic pressure testing, spark pinhole leakage testing (up to 5kV) to ensure lining integrity, pneumatic air tightness checks, and pressure cycle fatigue testing.

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